You were banned for griefing and killing another players animals. We do not warn for griefing. You were expected to read the rules upon joining the server. The rules clearly state this is a no griefing, no stealing server.
You went into another players home, you broke and took his bed. Then you went outside of his home and killed all the cows that were in his pen. This is unacceptable.
When you return, please try to keep the rules in mind. You can review the rules here:
https://famcraft.com/rules/rules/ Thank you for taking the time to post and learn why you were banned. I hope you have learned from this and will enjoy your time on the server when you return.